Automotive frame bumper interface for discriminated deceleration response

The field of the present invention is frame rail and bumper beam combinations for automotive vehicles. More particularly, the field of the present invention relates to an arrangement of a frame rail and bumper beam combination for an automotive vehicle wherein in a frontal crash the bumper beam will deform in a manner to provide a predetermined deceleration response. An arrangement of a frame rail bumper beam combination is provided which has a frame rail for connection with a chassis of an automotive vehicle, and a bumper beam having a tubular cross-sectional shape with a first section connected with the frame rail, and a first upper surface between a front end and a rear end of the bumper beam, and the bumper beam having at least first and second cutouts in the first surface with a web therebetween that causes the rail to plastically deform in the first section of the bumper beam in a crash.